1220002012 has 12 divisors (see below), whose sum is σ = 2137218160. Its totient is φ = 609368256.

The previous prime is 1220001973. The next prime is 1220002019. The reversal of 1220002012 is 2102000221.

It is a self number, because there is not a number n which added to its sum of digits gives 1220002012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1220002019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153837 + ... + 161572.

Almost surely, 2^1220002012 is an apocalyptic number.

It is an amenable number.

1220002012 is a deficient number, since it is larger than the sum of its proper divisors (917216148).

1220002012 is a wasteful number, since it uses less digits than its factorization.

1220002012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316380 (or 316378 counting only the distinct ones).

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1220002012 is about 34928.5271948303. The cubic root of 1220002012 is about 1068.5303175480.

Adding to 1220002012 its reverse (2102000221), we get a palindrome (3322002233).

The spelling of 1220002012 in words is "one billion, two hundred twenty million, two thousand, twelve".